作者:Isidoro Izquierdo Cubero、Maria T. Plaza Lopez-Espinosa、Naama Kari
DOI:10.1016/0008-6215(94)84020-2
日期:1994.8
Abstract The synthesis of (2 S ,5 RS )-2-ethyl-1,6-dioxaspiro[4.4]nonane (chalcogran) ( 1 ) from 2,3:4,6-di- O -isopropylidene-α- l -sorbofuranose ( 2 ) through elongation of the carbon chain at C-1 and C-6 by the Wittig and Corey methodologies, respectively, spiroacetalation, and deoxygenation at C-3,4 of the appropriately protected derivatives by the Barton method has been accomplished.
摘要由2,3:4,6-二-O-异亚丙基-α-l-合成(2 S,5 RS)-2-乙基-1,6-二氧杂螺[4.4]壬烷(查尔克兰)(1)通过维蒂希和科里方法分别通过碳链在C-1和C-6上的延伸,山梨糖醛酸(2)的制备,通过Barton方法实现了适当保护的衍生物的螺缩醛化和在C-3,4处的脱氧。